Atoms, Elements, Compounds

Front

What are the three particles that make up an atom?

Back

Protons, neutrons, and electrons.

Front

Which subatomic particle has a negative charge?

Back

Electron.

Front

What is the term for a substance made of two or more different atoms combined?

Back

Compounds.

Front

Where is most of the mass of an atom concentrated?

Back

Nucleus.

Front

What is a pure substance made of only one kind of atom?

Back

Element.

Front

What is the smallest unit of an element that retains its properties?

Back

Atom.

Front

What is the center of an atom called?

Back

Nucleus.

Front

What are the positively charged particles in an atom?

Back

Protons.

Front

What is the term for a substance formed when two or more elements chemically bond?

Back

Compound.

Front

What is the charge of a neutron?

Back

Neutral (no charge).